144240403021321 has 4 divisors (see below), whose sum is σ = 144454727543572. Its totient is φ = 144026078499072.

The previous prime is 144240403021303. The next prime is 144240403021349. The reversal of 144240403021321 is 123120304042441.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 75601912044096 + 68638490977225 = 8694936^2 + 8284835^2 .

It is a cyclic number.

It is not a de Polignac number, because 144240403021321 - 2²⁵ = 144240369466889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144240403081321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107162260116 + ... + 107162261461.

It is an arithmetic number, because the mean of its divisors is an integer number (36113681885893).

Almost surely, 2^{144240403021321} is an apocalyptic number.

It is an amenable number.

144240403021321 is a deficient number, since it is larger than the sum of its proper divisors (214324522251).

144240403021321 is an equidigital number, since it uses as much as digits as its factorization.

144240403021321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214324522250.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 144240403021321 its reverse (123120304042441), we get a palindrome (267360707063762).

The spelling of 144240403021321 in words is "one hundred forty-four trillion, two hundred forty billion, four hundred three million, twenty-one thousand, three hundred twenty-one".